var http = require('http');
var url='http://www.imooc.com/learn/348';

http.get(url,function (res) {
    var html='';
    res.on('data',function(data){
       html+=data;
    });
    res.on('end',function(){
        console.log(html);
    })
}).on('error',function(){
    console.log('获取课程数据出错！')
});